Stress relief annealed
A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.
Classification: Pressed or molded glass articles, wired or not, for building or construction;leaded glass windows etc; formed multicellular or foam glass
NSN 5950-01-625-7614
NSN 6150-01-496-3852
NSN 6110-01-438-6375
NSN 6145-00-360-7760
NSN 5996-01-559-6724
NSN 5998-00-894-9768
NSN 6135-00-548-2765
NSN 6135-00-262-6807
NSN 5960-01-622-0393
NSN 5975-01-019-1553
NSN 6320-01-377-5701
NSN 5935-00-798-2485